Recherche dans la collection - Lachine Canal Dominion of Canada, connecting Lake St. Louis and the harbour of Montreal on the River St. Lawrence. Mean difference of level between Lake and harbour, 45 feet. Length of Canal, 8 3/4 miles. 5 locks each 270 long, 45 feet wide in course of enlargement by the Department of Public Works. John Page, Chief Engineer, John G. Sippell, Supt. Engineer. [cartographic material]